<template>
    <div>
        <h1>{{id?`编辑`:`新建`}}广告</h1>
        <el-form label-width='120px'>
            
            <el-form-item label="名称"> 
                <el-input v-model="model.name"></el-input>
            </el-form-item>
            <el-form-item label='广告'>
                <el-button size='small' @click="model.items.push({})"> <i class="el-icon-plus"></i>添加广告</el-button>
                <el-row type='flex'>
                    <el-row>
                        <!-- :md='12'表示普通屏幕一行显示两个框 -->
                        <el-col :md='24' v-for='(item,i) in model.items' v-bind:key='i'>
                            <el-form-item label='跳转链接'>
                                <el-input v-model='item.url'/>
                            </el-form-item>
                            <el-form-item label='图片' style="margin-top:0.5rem">
                                 <el-upload 
                                    class="avatar-uploader"
                                    :action="uploadURL"
                                    :headers="getAuthHeaders()"
                                    :show-file-list="false"
                                    :on-success="res=>$set(item,'image',res.url)"
                                    >
                                        <!-- 有图片显示图片，没有则显示上传图标,:src显示的图片 -->
                                        <img v-if="item.image" :src="item.image" class="avatar"/>
                                        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
                                </el-upload>
                            </el-form-item>
                             <el-form-item>
                                <el-button size='small' type='danger' @click="model.items.splice(i,1)">
                                    删除
                                </el-button>
                            </el-form-item>
                        </el-col>
                    </el-row>
                </el-row>
            </el-form-item>
            <el-form-item>
                <el-button type='primary' @click="save()" native-type='submit'>
                    保存
                </el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
export default {
    props:{
        id:{}
    },
    data(){
        return{
            model:{
                items:[]
            },
        }
    },
    methods:{
        async save(){
            let res
            if(this.id){
                res = await this.$http.put(`rest/Advertisement/${this.id}`,this.model)
            }else{
                res = await this.$http.post('rest/Advertisement',this.model)
            }
            this.$router.push('/advertisement/list')
            this.$message({
                type:'success',
                message:'保存成功'
            })
        },
        async fetch(){
            const res = await this.$http.get('rest/Advertisement/'+this.id)
            this.model = Object.assign({},this.model,res.data)
        },
        
    },
    created(){
         
        if(this.id){
            this.fetch()
        }
    }
}
</script>